本文利用Nvivo视频分析技术，基于云模型分析系统对“格致杯教学技能比赛”的3个不同课题的优秀教学视频进行分析. 从课堂行为分布、云模型基本参数和课堂行为评价三个方面，全面剖析优秀教学技能比赛视频的课堂行为，为之后分析不同类型课堂的教学行为提供示范和借鉴. 结果表明，优秀技能比赛视频的课堂行为丰富度相对较低，但不同水平的课堂之间存在差异，课堂重心偏向于教师言语行为，均属于讲授式课堂教学模式，可用评价函数来评定教学水平，三种课堂教学水平仍存在差异.

Nvivo video analysis technology is used to analyze the excellent teaching videos of 3 different topics of "Gezhi Cup Teaching Skills Competition" based on cloud model analysis system. From the three aspects of classroom behavior distribution, cloud model basic parameters and classroom behavior evaluation, the classroom behavior of excellent teaching skills competition video is comprehensively analyzed, which provides a model and reference for the analysis of different types of classroom teaching behavior. The results show that the classroom behavior richness of the video is relatively low, but there are differences among different levels of classes; The classroom focus tends to the teacher's speech behavior, which belongs to the lecture-type classroom teaching model; Evaluation function can be used to evaluate the teaching level, and there are still differences among the three classroom teaching levels.